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公开(公告)号：EP0786899B1
公开(公告)日：2004-08-25
申请号：EP97300163.9
申请日：1997-01-13
申请人： Hewlett-Packard Company (a Delaware corporation) , Agilent Technologies, Inc. (a Delaware corporation)
IPC分类号： H04N5/217
CPC分类号： H03F3/45475 , H03F1/303 , H03F3/087 , H03F2200/249 , H03F2203/45212 , H04N5/3651 , H04N5/3658 , H04N5/3692 , H04N5/3742 , H04N5/3745 , H04N5/378
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公开(公告)号：EP0929194B1
公开(公告)日：2004-04-28
申请号：EP99300152.8
申请日：1999-01-08
申请人： Hewlett-Packard Company (a Delaware corporation) , Agilent Technologies, Inc. (a Delaware corporation)
IPC分类号： H04N5/14
CPC分类号： H04N5/145 , G01S3/7864 , G06T7/20
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公开(公告)号：EP0929194A3
公开(公告)日：1999-08-04
申请号：EP99300152.8
申请日：1999-01-08
IPC分类号： H04N5/14
CPC分类号： H04N5/145 , G01S3/7864 , G06T7/20
摘要： An imaging system that employs sub-framing of sampled image frames (40-42) to improve accuracy of motion detection, sub-frames a pair of image frames (40-42) sampled from an image scene (14) by calculating a correlation metric for each of a set of possible spacial relationships between the image frames (40-42) using the pixel data values from areas of the image frames (40-42) that contain overlapping content. This sub-framing enhances the accuracy of motion detection by eliminating areas of the image frames (40-42) not having overlapping image content.
摘要翻译： 一种使用采样图像帧的子帧（40-42）以提高运动检测的准确性的成像系统，通过计算相关性度量来对从图像场景（14）采样的一对图像帧（40-42）进行子帧 对于图像帧（40-42）之间的一组可能的空间关系中的每一个，使用来自包含重叠内容的图像帧（40-42）的区域的像素数据值。 该子构架通过消除没有重叠图像内容的图像帧（40-42）的区域来增强运动检测的准确性。
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公开(公告)号：EP0730366A2
公开(公告)日：1996-09-04
申请号：EP96300830.5
申请日：1996-02-07
IPC分类号： H04N1/107
CPC分类号： H04N1/047 , H04N1/107 , H04N1/193 , H04N2201/02439 , H04N2201/0414 , H04N2201/043 , H04N2201/04712 , H04N2201/04729 , H04N2201/04731 , H04N2201/04734 , H04N2201/04737 , H04N2201/04743 , H04N2201/04787 , H04N2201/04794
摘要： A scanning device (10) for forming a scanned electronic image (54) includes an imaging sensor (22) and at least one navigation sensor (24 and 26). The imaging sensor is a linear array of sensor elements, with a two-dimensional navigation sensor array at each end. The scanning device has three degrees of freedom, since position information from the navigation sensors allows manipulation of an image signal from the imaging sensor to reduce distortion artifacts caused by curvilinear scanning. Acceptable sources of the position information include printed matter and contrast variations dictated by variations in the inherent structure-related properties (64) of the medium (14) on which the scanned image is formed. Illumination for optimal operation of the navigation system may be introduced at a grazing angle (30) in some applications or in the normal to a plane of the original in other applications.
摘要翻译： 用于形成扫描电子图像（54）的扫描装置（10）包括成像传感器（22）和至少一个导航传感器（24和26）。 成像传感器是传感器元件的线性阵列，每端具有二维导航传感器阵列。 扫描装置具有三个自由度，因为来自导航传感器的位置信息允许操纵来自成像传感器的图像信号，以减少由曲线扫描引起的失真伪像。 位置信息的可接受的来源包括由形成扫描图像的介质（14）的固有结构相关属性（64）所规定的印刷物和对比度变化。 导航系统的最佳操作的照明可以在某些应用中以掠角（30）或在其他应用中的原始平面中的普通角度引入。
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公开(公告)号：EP0730366B1
公开(公告)日：2000-07-05
申请号：EP96300830.5
申请日：1996-02-07
IPC分类号： H04N1/107
CPC分类号： H04N1/047 , H04N1/107 , H04N1/193 , H04N2201/02439 , H04N2201/0414 , H04N2201/043 , H04N2201/04712 , H04N2201/04729 , H04N2201/04731 , H04N2201/04734 , H04N2201/04737 , H04N2201/04743 , H04N2201/04787 , H04N2201/04794
摘要： A scanning device (10) for forming a scanned electronic image (54) includes an imaging sensor (22) and at least one navigation sensor (24 and 26). The imaging sensor is a linear array of sensor elements, with a two-dimensional navigation sensor array at each end. The scanning device has three degrees of freedom, since position information from the navigation sensors allows manipulation of an image signal from the imaging sensor to reduce distortion artifacts caused by curvilinear scanning. Acceptable sources of the position information include printed matter and contrast variations dictated by variations in the inherent structure-related properties (64) of the medium (14) on which the scanned image is formed. Illumination for optimal operation of the navigation system may be introduced at a grazing angle (30) in some applications or in the normal to a plane of the original in other applications.
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公开(公告)号：EP0929194A2
公开(公告)日：1999-07-14
申请号：EP99300152.8
申请日：1999-01-08
IPC分类号： H04N5/14
CPC分类号： H04N5/145 , G01S3/7864 , G06T7/20
摘要： An imaging system that employs sub-framing of sampled image frames (40-42) to improve accuracy of motion detection, sub-frames a pair of image frames (40-42) sampled from an image scene (14) by calculating a correlation metric for each of a set of possible spacial relationships between the image frames (40-42) using the pixel data values from areas of the image frames (40-42) that contain overlapping content. This sub-framing enhances the accuracy of motion detection by eliminating areas of the image frames (40-42) not having overlapping image content.
摘要翻译： 采用采样图像帧（40-42）的子帧以提高运动检测精度的成像系统通过计算相关度量来对从图像场景（14）采样的一对图像帧（40-42）进行子帧 对于来自包含重叠内容的图像帧（40-42）的区域的像素数据值，对于图像帧（40-42）之间的一组可能的空间关系中的每一个。 该子帧通过消除不具有重叠图像内容的图像帧（40-42）的区域来增强运动检测的精度。
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公开(公告)号：EP1175090A1
公开(公告)日：2002-01-23
申请号：EP01117841.5
申请日：1997-01-13
申请人： Hewlett-Packard Company (a Delaware corporation) , Agilent Technologies, Inc. (a Delaware corporation)
IPC分类号： H04N5/217
CPC分类号： H03F3/45475 , H03F1/303 , H03F3/087 , H03F2200/249 , H03F2203/45212 , H04N5/3651 , H04N5/3658 , H04N5/3692 , H04N5/3742 , H04N5/3745 , H04N5/378
摘要： Circuitry and method for transferring signals from a photoreceiver array (24) to computational circuitry (21) includes parallel transfer amplifiers (17) that receive periodic offset correction and includes DC removal amplifiers (19). In a first embodiment, each transfer amplifier has a differential circuit (46) that can be switched from a reset mode to a readout mode. In the readout mode, the voltage state at the output (108) is responsive to first and second inputs (74 and 76), with the second input being connected to a source (88) of a reference voltage. In the reset mode, the inputs are both connected to the reference voltage and the output is temporarily connected to a source (114) of a fixed reset voltage. An offset adjustment signal (144) is generated in response to detection of a voltage difference between the reset voltage and the actual voltage state at the output after the output has been disconnected from the source of the reset voltage. A single offset circuit is used to periodically and sequentially refresh the various transfer amplifiers. In a second embodiment, spatial frequency components of the outputs of the photoreceiver array are removed by DC removal amplifiers (208, 210 and 212). Each DC removal amplifier is assigned to a particular photoelement in the array, but receives outputs (232 and 234) from one or more other photoelements in the array. The output (236) of the amplifier is responsive to the differences between the analog signals input to the amplifier.
摘要翻译： 将信号从光接收器阵列（24）传送到计算电路（21）的电路和方法包括接收周期性偏移校正并包括直流去除放大器（19）的并行传输放大器（17）。 在第一实施例中，每个传送放大器具有可从复位模式切换到读出模式的差分电路（46）。 在读出模式下，输出端（108）的电压状态响应于第一和第二输入（74和76），第二输入端连接到参考电压的源极（88）。 在复位模式下，输入都连接到参考电压，并且输出暂时连接到固定复位电压的源极（114）。 响应于在输出与复位电压源断开之后检测到复位电压和输出端的实际电压状态之间的电压差而产生偏移调整信号（144）。 使用单个偏移电路来周期性地和顺序地刷新各种传输放大器。 在第二实施例中，由DC去除放大器（208,210和212）去除光接收器阵列的输出的空间频率分量。 每个DC去除放大器分配给阵列中的特定光电元件，但是从阵列中的一个或多个其他光电元件接收输出（232和234）。 放大器的输出（236）响应于输入到放大器的模拟信号之间的差异。
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8.发明公开Image signal read-out circuitry with offset correction 失效Bildsignalausleseschaltung mit Offset-Korrektur
公开(公告)号：EP0786899A2
公开(公告)日：1997-07-30
申请号：EP97300163.9
申请日：1997-01-13
IPC分类号： H04N5/217
CPC分类号： H03F3/45475 , H03F1/303 , H03F3/087 , H03F2200/249 , H03F2203/45212 , H04N5/3651 , H04N5/3658 , H04N5/3692 , H04N5/3742 , H04N5/3745 , H04N5/378
摘要： Circuitry and method for transferring signals from a photoreceiver array (24) to computational circuitry (21) includes parallel transfer amplifiers (17) that receive periodic offset correction and includes DC removal amplifiers (19). In a first embodiment, each transfer amplifier has a differential circuit (46) that can be switched from a reset mode to a readout mode. In the readout mode, the voltage state at the output (108) is responsive to first and second inputs (74 and 76), with the second input being connected to a source (88) of a reference voltage. In the reset mode, the inputs are both connected to the reference voltage and the output is temporarily connected to a source (114) of a fixed reset voltage. An offset adjustment signal (144) is generated in response to detection of a voltage difference between the reset voltage and the actual voltage state at the output after the output has been disconnected from the source of the reset voltage. A single offset circuit is used to periodically and sequentially refresh the various transfer amplifiers. In a second embodiment, spatial frequency components of the outputs of the photoreceiver array are removed by DC removal amplifiers (208, 210 and 212). Each DC removal amplifier is assigned to a particular photoelement in the array, but receives outputs (232 and 234) from one or more other photoelements in the array. The output (236) of the amplifier is responsive to the differences between the analog signals input to the amplifier.
摘要翻译： 将信号从光接收器阵列（24）传送到计算电路（21）的电路和方法包括接收周期性偏移校正并包括直流去除放大器（19）的并行传输放大器（17）。 在第一实施例中，每个传送放大器具有可从复位模式切换到读出模式的差分电路（46）。 在读出模式下，输出端（108）的电压状态响应于第一和第二输入（74和76），第二输入端连接到参考电压的源极（88）。 在复位模式下，输入都连接到参考电压，并且输出暂时连接到固定复位电压的源极（114）。 响应于在输出与复位电压源断开之后检测到复位电压和输出端的实际电压状态之间的电压差而产生偏移调整信号（144）。 使用单个偏移电路来周期性地和顺序地刷新各种传输放大器。 在第二实施例中，由DC去除放大器（208,210和212）去除光接收器阵列的输出的空间频率分量。 每个DC去除放大器分配给阵列中的特定光电元件，但是从阵列中的一个或多个其他光电元件接收输出（232和234）。 放大器的输出（236）响应于输入到放大器的模拟信号之间的差异。
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公开(公告)号：EP0730366A3
公开(公告)日：1996-10-09
申请号：EP96300830.5
申请日：1996-02-07
IPC分类号： H04N1/107
CPC分类号： H04N1/047 , H04N1/107 , H04N1/193 , H04N2201/02439 , H04N2201/0414 , H04N2201/043 , H04N2201/04712 , H04N2201/04729 , H04N2201/04731 , H04N2201/04734 , H04N2201/04737 , H04N2201/04743 , H04N2201/04787 , H04N2201/04794
摘要： A scanning device (10) for forming a scanned electronic image (54) includes an imaging sensor (22) and at least one navigation sensor (24 and 26). The imaging sensor is a linear array of sensor elements, with a two-dimensional navigation sensor array at each end. The scanning device has three degrees of freedom, since position information from the navigation sensors allows manipulation of an image signal from the imaging sensor to reduce distortion artifacts caused by curvilinear scanning. Acceptable sources of the position information include printed matter and contrast variations dictated by variations in the inherent structure-related properties (64) of the medium (14) on which the scanned image is formed. Illumination for optimal operation of the navigation system may be introduced at a grazing angle (30) in some applications or in the normal to a plane of the original in other applications.
摘要翻译： 用于形成扫描电子图像（54）的扫描装置（10）包括成像传感器（22）和至少一个导航传感器（24和26）。 成像传感器是传感器元件的线性阵列，每一端都有一个二维导航传感器阵列。 扫描装置具有三个自由度，因为来自导航传感器的位置信息允许操纵来自成像传感器的图像信号以减少由曲线扫描引起的失真假象。 位置信息的可接受的来源包括印刷物和由其上形成扫描图像的介质（14）的固有结构相关性质（64）的变化所指示的对比度变化。 对于导航系统的最佳操作的照明可以在一些应用中以掠射角（30）引入，或者在其他应用中以原始平面的法线引入。
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